@Radunion
My tour is in dessert environment: it doesn't snow that much.
Especially not beginning of December: temperatures are olso not that bad. There is a wind direction Southwest from the warm oceaan. Cold from north is blocked by the Rocky Mountains. I have been there 2 times in winter and where t-shirts: only on the mountain its cold, but not that cold at daylight. But we have jackets and newspapers.
The mountain roads will be snow free. The parks are not busy this period. In summer months this part of America is to hot and to crowded. So this period is ideal: especially around Christmas!
So Radunion i count on your voite

@Dreizehn
Always having marks on my choices.
Clear you are not voiting for me.
Go to Vegas around Christmas: a must have for everyone!